CN102192064A - Carburetor type motorcycle matching method based on excess air coefficient Lambda - Google Patents
Carburetor type motorcycle matching method based on excess air coefficient Lambda Download PDFInfo
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- CN102192064A CN102192064A CN 201010124133 CN201010124133A CN102192064A CN 102192064 A CN102192064 A CN 102192064A CN 201010124133 CN201010124133 CN 201010124133 CN 201010124133 A CN201010124133 A CN 201010124133A CN 102192064 A CN102192064 A CN 102192064A
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- carburetor
- motorcycle
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- position sensor
- coupling
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a carburetor type motorcycle matching method based on excess air coefficient Lambda. In the method, related parts such as a carburetor and the like are targetedly adjusted and designed in different operation points (different loads and different rotational speeds of an engine), excess air coefficient Lambda values corresponding to all operation points are controlled within appropriate ranges so that the requirement of matching required by motorcycle (or the engine) is met. By the method, the causal relationship among parameters which affect the dynamic property, the economy and the like of the motorcycle (or the engine) is found. Compared with the prior art, the method is more scientific, has a definite purpose and strong target of technical policy, and can be used for reducing the blindness of matching, improving success rate of a matching test, remarkably shortening the matching period and reducing the cost of the matching test.
Description
Technical field
The present invention relates to a kind of carburetor type motorcycle matching process, at different operating points (motor different load and different rotating speeds), adjust, design associated components such as Carburetor pointedly, the air excess factor value of controlling each operating point correspondence is in the suitable scope, to reach required motorcycle (or motor) coupling requirement.
Background technique
At present carburetor type motorcycle matching test method adopts the constant speed method to use the idle exhaust emission ANALYZER on chassis dynamometer or engine dynamometer to mate, and its method and deficiency are as follows:
The exhaust emission pollution substrate concentration that adopts the idle exhaust emission ANALYZER to record when (1), mating is judged motorcycle (or motor) combustion regime and matching effect, the exhaust emission effluent concentration value scope of being got relies on the coupling experience, no direct corresponding relations such as these posterior infromations and combustion regime, matching effect, engine working conditions is separated in adjustment well.
(2), when coupling the idle exhaust emission ANALYZER that adopts adopt the NDIR mode that exhausting air is analyzed because water vapour has interference to the mensuration of CO and NO, so be in series with cooler or dehumidifier at the ANALYZER front end.During its ANALYZER measuring N O, measuring accuracy is low; When measuring HC, can only detect the HC of a certain wavelength period, then insensitive to diluted colour hydrocarbon and aromatic hydrocarbon, the result of measurement mainly is the content of reaction saturated hydrocarbon and do not represent the content of various HC, so total validity is relatively poor.This instrument adopts electrochemical means that the oxygen in the exhaust emission exhausting air is analyzed, by obtaining the air excess factor value after calculating indirectly.When mating with the idle exhaust emission ANALYZER, need on chassis dynamometer (or power measurer engine pedestal), carry out continuously, the idle exhaust emission ANALYZER is in using for a long time, the phenomenon that part water vapour enters ANALYZER can appear, cause phenomenons such as testing precision reduction even emission analyzer inefficacy, so it is lower to make long-time data confidence level that detects with this discharging instrument.
(3), can not realize that the different operating points of Carburetor accurately reach under different operating points with the coupling of air excess factor numerical value as judgment basis the location.
Therefore, there is unreasonable part in present carburetor type motorcycle matching process, because its matching effect has bigger uncertainty, carburetor type motorcycle coupling needs the matching process of science.
Summary of the invention
The object of the invention is to provide a kind of carburetor type motorcycle matching process based on air excess factor, this method is based under the prerequisite that igniting is optimized, air fuel ratio is the key factor that influences power character and discharging, so adjust, design associated components such as Carburetor pointedly at different operating point (motor different load and different rotating speeds), the air excess factor value of controlling each operating point correspondence is in the suitable scope, to reach required motorcycle (or motor) coupling requirement.So-called air excess factor, air fuel ratio that expression is actual and the relation between the chemically correct fuel, the needed air quality of perfect combustion of the air excess factor=actual air quality that enters/in theory.
Purpose of the present invention can realize by following technical measures, utilizes throttle position sensor to have output voltage values and proportional this characteristic of throttle position, has designed Carburetor accelerator open degree control gear; The drag-line line that moves through of carburetor needle valve is connected on this control gear rotating disc, the rotation of motorcycle oil filler during coupling (or the throttle actuator on the stand rotatablely move) realize by rotating disc driven rotary axle that the throttle position sensor corner changes and and carburetor throttle be synchronized with the movement.Motorcycle when operation its add, subtract signal output that throttle is reflected at throttle position sensor be exactly magnitude of voltage add, subtract variation.Control the aperture of carburetor throttle in the test by motorcycle oil filler (or the throttle actuator on the stand), record the throttle position sensor output voltage values by sampling system, realize the accurate measurement and the control of throttle opening, also just realized the corresponding carrying capacity control of motorcycle and motor.
Simultaneously, the lambda sensor that utilization is located in motorcycle (or motor) the exhaust silencer outlet pipe detects the air excess factor value from exhausting air, give sampling system with its result transmission, in conjunction with signals such as the voltage signal of throttle position sensor and engine speed, thereby realize the coupling of different operating points such as Carburetor.
Its matching process is realized by following steps: (1), motorcycle (or motor) are prepared; (2), adjust throttle position sensor zero point and maximum output; (3), the coupling operating point is divided (as 25%, 50%, 75% and 100% etc.); (4), parameter sampling, analyses such as coupling operating point magnitude of voltage and air excess factor value; (5), reaching coupling target air excess factor value judges; (6), carry out the coupling of next operating point; (7), repeat above (4) ~ (6) step; (8), test is comprehensive judges and the end judgement.
The present invention compares with existing carburetor type motorcycle matching process, have the following advantages: (1), the present invention are owing to be that the air excess factor of each operating point of motorcycle (or motor) is mated, tester can be according to the air excess factor value requirement of each operating point of motorcycle (or motor), design associated components such as Carburetor pointedly, to reach the requirement of needed motorcycle (or motor) coupling.Use this matching process to do in motorcycle (or motor) matching process, the designer has known matching state, the combustion regime of motorcycle (or motor) before verification experimental verification, for associated components such as adjustment, change Carburetors, revise that inappropriate air excess factor value is that specific aim is carried out under some operating mode, this is a kind of utilization of forward design matching process.(2), this matching process has found influences motorcycle (or motor) power character, the isoparametric causality of Economy, this method has more science, it is motivated, technical cue is with strong points, reduced the blindness of coupling, improved the success rate of match test, and shortened the coupling cycle significantly, reduced the cost of match test.
Description of drawings
Fig. 1 is a Carburetor accelerator open degree control gear system diagram;
Fig. 2 is system's installation diagram;
Fig. 3 is Carburetor accelerator open degree control gear figure;
Fig. 4 is throttle position sensor figure;
Fig. 5 is closure corner and output voltage graph of a relation;
Fig. 6 is the fuel feeding plotted curve of Carburetor for different air mass flows;
Fig. 7 is carburetor air amount and choke valve displacement relation figure;
Fig. 8 is air mass flow and the carburetor needle valve disjunction graph of a relation of vehicle under different operating modes;
Fig. 9 is that step is mated in the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further described.
Referring to Fig. 1 Carburetor accelerator open degree control gear system diagram, represented that motorcycle oil filler 1 is connected on the rotating disc a of accelerator open degree control gear 3 by oil filler drag-line line 2, rotating disc a driven rotary axle c realizes that throttle position sensor 7 corners change and is synchronized with the movement by carburetor needle valve drag-line line 4 pulling Carburetors 5 closures, drive the change in displacement of carburetor needle valve 6, thereby the control 9 of realization air mass flow finally realizes the control 10 of fuel flow.Motorcycle when operation its to add, subtract signal output that throttle is reflected at throttle position sensor 7 be exactly that the linearity of magnitude of voltage adds, subtracts and changes 8, in test by the throttle actuator on motorcycle oil filler 1(or the stand) aperture of control Carburetor 5 closures, measure throttle position sensor 7 output voltage values by sampling system, can realize the accurate measurement and the control of throttle opening, also just realized the control of the corresponding carrying capacity of motorcycle engine, this control has better repeatability and conformity.Fig. 2 is system's installation diagram, the figure shows the system that is installed on the frame of motorcycle 11 when Carburetor accelerator open degree control gear 3 is made coupling, demarcates and tested sketch is installed.Oil filler drag-line line 2 is installed on the motorcycle oil filler 1, carburetor needle valve drag-line line 4 is installed on Carburetor 5 throttle bodies, lambda sensor 13 is installed on exhaust silencer 12 outlet pipes, and concerns with the relative installation of upper-part and motor 14, air-strainer 15.
Fig. 3 is Carburetor accelerator open degree control gear figure, represented that carburetor needle valve drag-line line 4 is connected with the rotating disc a realization middle transition of oil filler drag-line line 2 by accelerator open degree control gear 3, the The whole control device is fastened on the vehicle frame 11 by Placements such as bolts, the rotation of oil filler 1 realizes moving of carburetor needle valve 6, and the rotation of rotating disc a simultaneously also drives the variation of throttle position sensor 7 corners.
Fig. 4 is a throttle position sensor 7 used in the present invention, comprises having changing displacement amount variation (or corner variation) into linear electrical signal (voltage, electric current etc.) other machine-electric equipment output or same nature.
Fig. 5 is throttle position sensor 7 output voltages and corner linear changing relation figure.Record the output voltage values under throttle position sensor 7 dead-center positions and the maximum opening, utilize its linear changing relation, just realized the coupling work under car load or the motor different opening.
Fig. 6, Fig. 7 are motorcycle of the present invention or engine charge air mass flow and fuel flow, Carburetor air throttle displacement relation figure.
Fig. 8 is air mass flow and the carburetor needle valve disjunction graph of a relation of vehicle under different operating modes.According to carburetor needle valve 6 each functional section, adjust correspondent section diameter and length etc., make it satisfy corresponding working condition requirement pointedly.
Fig. 9 is the carburetor type motorcycle matching method matches step based on air excess factor.
Claims (4)
1. carburetor type motorcycle matching process based on air excess factor, it is characterized in that: this method is at different operating points (motor different load and different rotating speeds), adjust, design associated components such as Carburetor pointedly, the air excess factor value of controlling each operating point correspondence is in the suitable scope, to reach required motorcycle or Engine Matching requirement.
2. method according to claim 1 is characterized in that: utilize throttle position sensor (7) to have output voltage values and proportional this characteristic of throttle position, designed Carburetor accelerator open degree control gear (3); The carburetor needle valve drag-line line (4) that moves through of carburetor needle valve (6) is connected on this control gear (3) rotating disc (a), and rotatablely moving of the rotation of motorcycle oil filler (1) or the throttle actuator on the stand realizes that by rotating disc (a) driven rotary axle (c) throttle position sensor (7) corner changes also and Carburetor (5) closure is synchronized with the movement during coupling; Motorcycle when operation its add, subtract signal output that throttle is reflected at throttle position sensor (7) be exactly magnitude of voltage add, subtract variation, aperture by the control of the throttle actuator on motorcycle oil filler (1) or stand Carburetor (5) closure, record throttle position sensor (7) output voltage values by sampling system, realize the accurate measurement and the control of throttle opening, also just realized the corresponding carrying capacity control of motorcycle and motor.
3. method according to claim 1, it is characterized in that:, realize above-mentioned matching process on exhaust silencer (12) outlet pipe by going up load signal, automotive engine test bench or the tachometer test engine tach signal that throttle position sensor (7) test motorcycle or motor are installed at Carburetor accelerator open degree control gear (3) and lambda sensor (13) test air excess factor being installed; Simultaneously, the lambda sensor (13) that utilization is located in motorcycle or engine exhaust muffler (12) outlet pipe detects the air excess factor value from exhausting air, give sampling system with its result transmission, in conjunction with signals such as the voltage signal of throttle position sensor (7) and engine speed, thereby realize the coupling of operating points such as difference such as Carburetor (5) parts of etc.ing.
4. according to claim 1,2 or 3 described methods, it is characterized in that: matching process is realized by following steps: (1), motorcycle (or motor) are prepared; (2), adjust throttle position sensor (7) zero point and maximum output; (3), the coupling operating point is divided (as 25%, 50%, 75% and 100% etc.); (4), parameter sampling, analyses such as coupling operating point magnitude of voltage and air excess factor value; (5), reaching coupling target air excess factor value judges; (6), carry out the coupling of next operating point; (7), repeat above (4)～(6) step; (8), test is comprehensive judges and the end judgement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010124133 CN102192064A (en) | 2010-03-15 | 2010-03-15 | Carburetor type motorcycle matching method based on excess air coefficient Lambda |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010124133 CN102192064A (en) | 2010-03-15 | 2010-03-15 | Carburetor type motorcycle matching method based on excess air coefficient Lambda |
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| CN 201010124133 Pending CN102192064A (en) | 2010-03-15 | 2010-03-15 | Carburetor type motorcycle matching method based on excess air coefficient Lambda |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685822A (en) * | 2019-09-12 | 2020-01-14 | 芜湖太阳神汽摩配制造有限公司 | Comprehensive flow test table for carburetor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62288354A (en) * | 1986-06-09 | 1987-12-15 | Nippon Carbureter Co Ltd | High responsive electronically controlled carburetor |
| JPH10227220A (en) * | 1997-02-14 | 1998-08-25 | Honda Motor Co Ltd | 2 cycle engine with exhaust port opening and closing valve |
| CN1541300A (en) * | 2001-09-18 | 2004-10-27 | 日产自动车株式会社 | Excess air factor control of diesel engine |
-
2010
- 2010-03-15 CN CN 201010124133 patent/CN102192064A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62288354A (en) * | 1986-06-09 | 1987-12-15 | Nippon Carbureter Co Ltd | High responsive electronically controlled carburetor |
| JPH10227220A (en) * | 1997-02-14 | 1998-08-25 | Honda Motor Co Ltd | 2 cycle engine with exhaust port opening and closing valve |
| CN1541300A (en) * | 2001-09-18 | 2004-10-27 | 日产自动车株式会社 | Excess air factor control of diesel engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685822A (en) * | 2019-09-12 | 2020-01-14 | 芜湖太阳神汽摩配制造有限公司 | Comprehensive flow test table for carburetor |
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Application publication date: 20110921 |